Process of rendering commercial salts non-corrosive.



SAMUEL rnacocn, or 'cnroaeo, ILLInois.

PROCESS OF BENDERING COMMERCIAL SALTS NON-GOBBOSIVE.

No Drawing.

To all whom it may concern:

Be it known that I, SAMUEL PEAGOCK, a citizen of the. United States, residing at Chicago, in the county of Cook and S ate of Illinois, have invented certain new anduseful Improvements in- Processes of Rendering Commercial Salts Non-Corrosive; and I do hereby declare the following to be a full, clear, and exact description of the'invention, suchas will enable others skilled in the art to which it appertains to makeand use the same. y

This invention relates to a process of rendering commercial salts non-corrosive, and has for its especial object to provide a simple and inexpensive method by which certain salts of commerce may be prevented from absorbing moisture, and thereupon corroding or otherwise injuring their contamers during storage and sh1pp1ng.

To these ends the invention consists in the novel steps constituting my process more fully hereinafterdisclosed and particularly pointed out in the claims.

Asiswell known, there are a number of commercial' 'salts which are deliquescent and normally moist only because they contain impurities that readily absorb water, the chemically ure salt being in itself non-deliquescent. Such impurities usually contain a free acid and they cannot be separated from the salt by any washing or other economical process heretofore known, so they are at Specification of Letters Patent. Patented Aug, 2?, 11912.

Application filed June 17, 1911. Serial No. 633,835. a

condition of thesalt, and'the consequent formation of lumps, as well as a corrosive action upon the" containers, and other well known undesirable qualities. According to my. invention, 1 remedy this condition by treating the salt thus contaminated with ammonia gas, thereby fixing thefree acid as i a salt of ammonia. Q

In practice I prefer to pass the crude salt rendered as dry as convenient through an atmosphere of ammonia gas, contained-in asuitable closed vessel provided with stirrers so that the gas may reach every particle of the salt-J The free acid present is thus converted into a salt of ammonia, but the latter is formed in such-small quantities thatits presence as an impurity is-notinjurious to the commercial salt. In fact, if said salt is to be used for fertilizer purposes, this said impurity would have a beneficial tendency.

What I claim is 1. The process of 'rendering'commercialsalts composed 'otnon-deliquescent comv pounds mixed with deliquescent acid impurities, non-corrosive as a whole, 'WlllCll consists in suitably subjectinggsaid commer cial salts to the action of ammonia gas until substantially all of said impurities are converted into salts of ammonia, substantially as described.

2. The process of rendering commercial salts containing a fIEGw acid as an impurity non-injurious to their containers, which con sists in subjecting the same to the action of an atmosphere of ammonia gas while stirring and finely dividing the mass and thereby neutralizing said acid, substantially as" described,

In testimony whereot, l afiix my signature, 1n presence of two witnesses.

- Witnesses! EDWARD L. BASH,

S. HANNA.

SAMUEL rnacocn. 

